Roll-polisher.



G. W. TOWNSEND.

ROLL POLISHER.

APPLIOATION FILD AUG.31, 1812.

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QMNJ w 7 O. W. TOWNSEND.

ROLL POLISHER.

APPLIUATION PILBD AUG.81, 1912.

Patented Sept. 2, 1913.

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fr; 6321W CORTEZ W. TOWNSEND, OF CANTON, OHIO.

ROLL-POLISHER.

Specification of Letters I atcnt.

Patent od Sept. 2, 1013.

Application filed August 31, 1912. Serial No. 718,025.

To (xZZ whom 'z't may concc'rn:

Be it known that I, Cou'rnz lV. TOWN- si'znn, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented a vnew and' useful Roll-Polisher, of which the following is a specification.

My invention relates to improvements in means for polishing the rolls of rolling mills and the like and more particularly to means adapted to be connected to the inill and to operate continuously and automatically so as to constantly maintain the surface of said rolls in polished condition. i

The objects of the invention are to generally improve devices of the charaeter mentioued, and to provide a neat, compact device which will be capable of being attached to a mill of ordinary construction at but slight expense and Without making any changes in the mill itself.

It is' a further object of the invention to provide means which will operate continuously'and automaticall which may be adjusted so as to polish t e rolls uniformly at all times and obviate the necessity of discontinuing rolling while the rolls are being periodically polished, as has heretofore been the custom. y

These objects, together with other objects apparent to those skilled in the art, may be attained by the construction illustrated in the aceompanying drawingsf although the invention may be embodied in other forms, the construction illustrated being chosen by way of example.

' In the drawingsFi re 1 is an elevation of a rolling mill showing one of my invented roll polishers thereon. Fig. 2 is a sectional view of the same on the line 2 -2' of Fig. 1. Fig. 3 is an enlarged fragmentary, Vertical seetional view' of the upper and lower rolls showing the application of the polishers thereto. Fig. 4 is a fragmentary, perspcctive view of one form of polishing blade. Fig. 5 is a transverse section of another form of polishing blade. Fig. 6 is a fragmentary elevation of a polishing blade connected to the back of a lower roll polisher. c

Throughout the several views similar reference numerals indicate similar parts.

Heretofore in the practical operation of 'rolling mills and more especially in the operation of Sheet, tin and black-plate mills the polishing of the rolls has constituted one of the most troublesome, i'cxatious and expensive problems.

The great cost of rolls and the care with which they must be made and used are fundamental facts of common knowledge to those skilled in the art. The rolls are so made as to producc the proper gagc and quality of product when they are in actual, prartical operation. VVhen the rolls are cool the product is of iuferior grade and uncertain gage and in order to produce rolled metal of uniformly high standard of quality it is desirable that the rolls be operatcd as continuously as possible so that the temperature thcreof may remain substantially uniform. In use the finely polished surfaces of the rolls become scratched. abraded and roughened. The demand of the trade is for a product having a smooth and even sui'face and in order'to maintain the rolls in proper condition to produce such metal frequent polishings have been thought necessary. This polishing has commonly been accomplished by manually holding a large polishing block of earbm'undum or the like against the rolls or by a somewhat crude device adapted to be temporarily clamped to the mill, whereby a rotary grinding wheel could be brought into contact with the rolls. lVith either of these methods, hou'cver, it has been necessary to remove a part of the attachments belonejing to the mill in order to make the rolls accessible for the polishing operation and the removal of these attachments, the polishing itself, and the subsequent assembling of the attachments prcparatory to rolling requires considerable time. `The rolls thus become cool, the mill crew scattered and the operation necessarily results in a very considerable economic loss for all concerned. Attention should also be called to the faet that the product of mills so ground must necessarily be of unequal quality, for the product of the mill immediately after the polishing', when the surfaces of the rolls are in the best condition, is poor because the rolls are cool. By the time the rolls have been heated by furthcr working the surfaces have already become somewhat scratched and uneven and at the time the rolls are in the best condition as to temperature the surfaccs of the rolls have already lost their high polish. As the work proceeds the surface of the rolls becomes more and more scratehed and unon properly heated rolls at this period becomes poorer and poorer in quality of surface until the point is reached where the rolls must, of necessity, be repolished. It is7 therefore, plainly to be seen that by the method heretofore in use the product cannot .possibly be of uniform quality.

By my invention I propose to remedy the I above described unsatisfactory and undesirable condition by providing a polishing device whichis constantly in operation` thus m.-iintaining the surfaces of the rolls in uniformly perfect condition at all times and obviating the necessity of discontinuing rolling for the purpose of polishing. Thus the rolls may be maintained at uniform temperature at all times by reason of their Constant use and not only will the product be of uniform gage and quality of surface, but the economic loss incident to (liscontinuing rolling at frequent intervals will be avoided. w i

Referring now more speeifically to the construction illustrated in the accompaiiying drawings the numerals 1-1 indicate the housings of a rolling mill of usual construction. The numeral 2 indicates the upper roll and the numeral 3 the lower roll of the mill which rolls may be of the plain or of the well known concave type. In connection with the housings and rolls I have also illustrated the fore plate 4 in Fig. 2 to indicate the front or rolleris side of the mill.

4All of these parts are of common and well known construction and require no further specific descnption.

Essentially my inventilon comprises a pol- 'ishing blade 01' member held in constant frictional contact with the surface of the roll,` means being provided for properly dis- -tributing and varying such contact and for generally increasing or 'diminishing the force of contact as may be required.

In thedrawings I have illustrated two different methods of carrying out the essential inventive principlev above indicated. For the upper roll I have shown the polishing blade as held against the roll by the operation ofsprings, whereas for the lower roll I have shown means by which the same result may be accomplished by the use of a weight. i

Referring now to the upper roll polisher, the numerals 5 indicate shortpins fixedly connected to the housings of the mill and constituting studs upon whichV the polishercarrying brackets 6 are pivotally mounted.

Each of said brackets comprises a depen'dingv ar1n 7, the lower endvof whichv lis/pivotally connected to the pin V5, an intermediate blade-'back-attaohing portion 8,, anda power applyingr arm' 9 extending, outwardly from the roll'2' at substantially right-angles to' the axis of the pins 5.

Extending from one portion 8 to the tion being preferably strengthened by a corner .brace 11 comprislng a short-piece Iof angle steel or the hke connected to the portion 8 and to the back 10 by rivets 12. On4

the side of the back 10 adjacent the Vroll 2 is the blade retaining flange 13 fixedly held in spaced relation with reference to the back 10 by means of rivets 14 and spacing'sleeves 15. djacent the upper edge of the back 10 is a series of screw threaded apertures 1(3 in which are arranged set screws 17 for the purpose 'of adjusting the pressure of the polishing blade against the roll, as will hereinafter more fully appear.

The upper polishing blade is preferably of the form illustrated in Fig. 4 where it will be seen that same consists of two spaced members 18 and 19 connected at their bases to the outer strengthening strips 20 and the spaoing strip 21 by means of rivets Each of the members 18 and 19 are preferably composed of a number of pieces or sections abutting at their end edges as illustrated at 23. The purpose of forming the members in this nianner is to provide for Variation and adjustment' of pressure and position to conform to the surface and shape of the roll. It should also be noted that the member 19- is of less height than the member 18 for the purpose of conforming to the curve of the roll, as shown in Fig. 3, in order that both members 18 and 19 may engage the roll. The edge of the blade provided with thestrips 20 and 21 is arranged between the fiange 13 and the back'lO and some means isprovided for loosely attaching the blade4 to the back 10. This may be accomplished by means of an ordinary bolt, not shown, passing through the flange 13, aperture 24 at the base of the blade, and back 10, the aperture 24 being of greater diameter than the bolt so as to allow some looseness or play, as more fully illustrated as to the lower blade in Fig. 5. The upper'bladeA having been attached to the back 10 as descri-bed the various set screws i 17 are turned to bring the members 18 and 19 into frictional contact with the/roll 2. After some use itwill Vbe understood that said members will be worn, as shown in F i'g. 3, which is rather desirable as giving a better frictional contact than when the blades are new. i

For the purpose of drawing upwardly upon the outer end of the arms'9 to produce proper frictional contact of the blade against the roll 2 the drawv rods 25 are provided, which rods are pivotally connected at 26 to the armvs'9, slidably extend through the ears 27, fiXedly connected to ythe houslngs 1, and are provided at their extreme upper ends with screw threads and nuts 28.

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' trated as applied to the lower roll, it will be noted that pins 5a similar to the pins 5 are fixedly connected to the housings 1. Each of the polisher-carrying brackets 6" comprises a blade-back-attaching portion 8a and an attaching arm 7a, the upper end of which is pivo-tally connected to one of the pins 5a. Extendin from one portion 8a to the other is the lade-back 10a which is fixedly connected to the said portion 8a in any suitable mechanical manner. Preferably intermediate the ends of the back 10 a weight arm 30 is fixedly connected thereto, as by the rivets 31, and extends outwardly from the roll 3 at substantially right-angles to the axis of the pins 5x. A weight, 32, is slidably arranged upon said arm and a set screw 32, for holding the Weight in deslred adjustment is provided.

On the side of the back 10 adjacent the roll 3 is the blade retaining flange 13a fixedly held in spaced relation to said back by means of rivets 141a and spacing sleeves 15. Adjacent 'the lower edge of the back 10, is a series 'of screw threaded apertures 16a in which are arranged set screws 17.

The lower roll polishing blade is preferably formed of two members, 33 and 311, arranged face to face, for increasing the fiexibility of the blade. Adjacent its upper edge said blade is provided With apertures 35 through which bolts 36 extend to loosely attach the blade to the flange 13'I and back 10a, as illustrated more clearly in Fig. 5. When the lower blade has been thus attached the set screws 17a may be turned to bring the said blade into properl frictional contact with the roll 8 and the weight 32 may be adjusted upon the arm 30 to produce the force of contact necessary to properly polish the roll.

In Fig. 3 the arrows adjacent the rolls 2 and 3 indicate their'respective directions of' rotation. It will be noted that the polishing blades are so disposed that the rolls rotate in a direction from the free edge towardthe attached edge, thus at all times holding the blades firmly in place between the flan es 13---13*fI and vbacks 10--10EL respective y and enabling very delicate adjustment and distribution of pressure by means of the set screws 17 and 171.

While I prefer to use high carbon steel for making the polishing blades I do not desire to be limited as to material in this respect, and the form and construction of the blades may vary in accordance with circumstances and requirements. In the operation of the device the pressure applying means, such as the Springs 29 and weight 32, should be carefully adjusted so as to impose only suflicient pressure to over-come the abrasion of the surfaces caused by rolling metal, so that the polish of said surfaces may bc uniformly maintained. Care should also be exercised to properly adjust the set screws 17 and 17 from time to time to properly distribute the polishing action of the blades.

I especially desire to call attention to the fact that while I have shown both upper and lower roll polishing means located on the saine side of the mill it is obvious that the same would operate equally as well if located on opposite sides of the mill.

Various other changes of form and detail may be made as circumstances require or experience suggest without departing from the spirit of the invention within the scope of the appended claims.

I claim:

1. For a rolling mill, means for polishing off the substance of a roll at the rolling surface thereof to uniformly counter-act the roughening abrasion of said surface produced by rolling, said means com rising, in combination with said roll, a flexlble metallic polishing member adapted to flexibly conform to said surface and holding means engaging said polishing member and adapted to const-antly hold said member in rollsubstance-polishingr contact with said surface during the operation of rolling.

2. or a rolling mill, means for polishing od the substance of a roll at the rolling surface thereof to uniformly counter-act the roughening abrasion of said surface produced by rolling, said means comprising a tlexible metallic polishing member adapted to flexibly conform to said surface and to be constantly held in roll-substance-polishing contact with said surface during the operation of rolling.

3. For a rolling mill, means for polishing off the substance of a roll at the rolling surface thereof to uniformly counter-act the roughening abrasion of said surface produced by rolling, said means comprising a plurality of metallic members, each composed of a plurality of flexible Sections, means for holding said members in rollsubstance-polishing contact with the roll during the operation of rolling, and means for variously distributing and adjusting the pressure of said metallic members against said surface.

4. For a'rolling mill, means for polishing off the substance of a roll at the rolling surface thereof to uniformly counter-act the roughening abrasion of said surface produced by rolling, 'said means comprising a flexible metallic polishing member, a polishing-member-holding means, pressure exerting means v'and adjusting means, said hold-v ing means connected to the housin-gs of vthe mill, said polishing member heldby said holding means, said-pressure exerting means connected to said holding means and adapted to actuate the same to bring saidpolishing member into roll-substance-polishing' contact with said surface, and said adjusting means connected to said holding means and adapted to engage andvflex said polishing member to adjust and Variously distribute ;he pressure of said member upon Isaid surace. 1

5. For a'roll'ing mill, mean's for polishing ofi? the substance of a roll at the rolling sur face thereof to uniformly counter-act vthe roughening abrasion of said surfaceprofv duced by rolling, said means comprising brackets pivotally connected to the housings of the mill, a blade back connected tosaid brackets, fa flexible metallic 'polishing 'blade adjustably connected to said blade back, means connected to said brackets for pivotally moving the same to throw saidV polish- 'ously adj-ust the polishing pressure of said blade against said surface throughout the length of said blade.

In testimonyi that I claim the above, l have hereunto subscribed my name in the presence of two witnesses.

CORTEZ W. TOWN SEND.

vi Witnesses:

` JOHN H. BIsHoP,

WILLIAM H. MILLER. 

